1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
const std = @import("std");
pub fn build(b: *std.Build) void {
const test_step = b.step("test", "Test it");
b.default_step = test_step;
const target = b.standardTargetOptions(.{});
const optimize = b.standardOptimizeOption(.{});
// Unwinding with a frame pointer
//
// getcontext version: zig std
//
// Unwind info type:
// - ELF: DWARF .debug_frame
// - MachO: __unwind_info encodings:
// - x86_64: RBP_FRAME
// - aarch64: FRAME, DWARF
{
const exe = b.addExecutable(.{
.name = "unwind_fp",
.root_source_file = .{ .path = "unwind.zig" },
.target = target,
.optimize = optimize,
.unwind_tables = if (target.result.isDarwin()) true else null,
.omit_frame_pointer = false,
});
const run_cmd = b.addRunArtifact(exe);
test_step.dependOn(&run_cmd.step);
}
// Unwinding without a frame pointer
//
// getcontext version: zig std
//
// Unwind info type:
// - ELF: DWARF .eh_frame_hdr + .eh_frame
// - MachO: __unwind_info encodings:
// - x86_64: STACK_IMMD, STACK_IND
// - aarch64: FRAMELESS, DWARF
{
const exe = b.addExecutable(.{
.name = "unwind_nofp",
.root_source_file = .{ .path = "unwind.zig" },
.target = target,
.optimize = optimize,
.unwind_tables = true,
.omit_frame_pointer = true,
});
const run_cmd = b.addRunArtifact(exe);
test_step.dependOn(&run_cmd.step);
}
// Unwinding through a C shared library without a frame pointer (libc)
//
// getcontext version: libc
//
// Unwind info type:
// - ELF: DWARF .eh_frame + .debug_frame
// - MachO: __unwind_info encodings:
// - x86_64: STACK_IMMD, STACK_IND
// - aarch64: FRAMELESS, DWARF
{
const c_shared_lib = b.addSharedLibrary(.{
.name = "c_shared_lib",
.target = target,
.optimize = optimize,
.strip = false,
});
if (target.result.os.tag == .windows)
c_shared_lib.defineCMacro("LIB_API", "__declspec(dllexport)");
c_shared_lib.addCSourceFile(.{
.file = .{ .path = "shared_lib.c" },
.flags = &.{"-fomit-frame-pointer"},
});
c_shared_lib.linkLibC();
const exe = b.addExecutable(.{
.name = "shared_lib_unwind",
.root_source_file = .{ .path = "shared_lib_unwind.zig" },
.target = target,
.optimize = optimize,
.unwind_tables = if (target.result.isDarwin()) true else null,
.omit_frame_pointer = true,
});
exe.linkLibrary(c_shared_lib);
const run_cmd = b.addRunArtifact(exe);
test_step.dependOn(&run_cmd.step);
}
}
|
